AFM 22
Technical Data Sheet 122 (previously TDS 126)
Edition: 08/2015, supersedes all prior editions.
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 Sheet as a PDF document safe/print
Material
AFM 22 consists of a tanged and galvanized steel core. An asbestos-free soft material compound containing aramide fibers, inorganic fillers and high-grade binder elastomers is applied to both sides of the core.

Properties
AFM 22 exhibits very high mechanical strength together with very high pressure and temperature resistance, yet still conforms well to sealing surfaces.
The material is resistant to oils, fuels, and mixtures of water and antifreeze or corrosion inhibitors.

Application
  • for cylinder head gaskets in standard IC engines
  • for other sealed joints subjected to high mechanical and thermal stress, e.g. intake and exhaust manifolds, transmission flanges, and high-pressure pumps

Surfaces
For special applications, full-surface or partial coatings are available, e.g. a non-stick coating on a PTFE basis (also possible on materials in roll form) or a silicone-based coating that improves micro-sealing (only available as a finished gasket). Screen printing with various elastomers is also possible.

Approvals
Germanischer Lloyd (DNV GL)
Approval for shipbuilding

Technical Data
(nominal thickness
1.30 mm)
Weight per surface unit kg/m² ≈ 3.8
Residual stress acc. to DIN 52 913
16 h, 300 °C N/mm² > 40

Compressibility and recovery
acc. to ASTM F 36, procedure J
compressibility % 7 - 13
recovery % > 55

Swelling acc. to ASTM F 146

in IRM 903 Oil (replaces ASTM Oil No. 3)
5 h, 150 °C
increase in thickness % < 10

in water / antifreeze (50:50)
5 h, 100 °C
increase in thickness % < 7

Operating temperature
maximum

°C 400
Surface pressure
maximum at 300 °C N/mm² 100
The data quoted above are valid for the material "as delivered" without any additional treatment. In view of the countless possible installation and operating conditions, definitive conclusions cannot be drawn for all applications regarding the behaviour in a sealed joint. Therefore, we do not give any warranty for technical data, as they do not represent assured characteristics. If you have any doubt, please contact us and specify the exact operating conditions.

Form of delivery
Gaskets according to a drawing, dimensions supplied, or other arrangement.

Rolls 500 mm wide
Other forms of delivery by arrangement
 
Nominal thickness

Tolerance (mm) Roll length (m)
0.75
+0.07/ –0.05
280
1.00
+0.06/ –0.06
210
1.10
+0.08/ –0.04
190
1.20
+0.10/ –0.02
170
1.30
+0.08/ –0.04
160
1.40
+0.07/ –0.08
150
1.50
+0.07 / -0.08
140
1.60
+0.07 / -0.08
130
1.80
+0.07 / -0.08
110
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